Patent GB-687817-A (GB)
Title: Improvements in or relating to automatic machines for the manufacture of radiators for automobile vehicles and the like
IPC: B21D53/08
Filed: 1951-04-17
Abstract: 687,817. Making radiators. SOC. ANON DES USINES CHAUSSON. April 17, 1951 [April 24, 1950], No. 8966/51. Class 83 (ii). An automatic machine for making radiators for automobile vehicles comprises a framework 1 on which is displaced a carriage 2 carrying a mounting 14 for a group of fin plates 15 arranged on edge with their perforations in line, a side wing 3 on which is mounted a reciprocating block 50 provided with a number of push rods 57 which pass through a container 82 carrying tubes to push the tubes through a guide 14<SP>1</SP> on the machine frame and then through the perforations in the fin plates, a slide 72 operated by the reciprocating control of the block and carrying two teeth, a movable tooth 78 on a transverse element 75 and a fixed tooth 74, the movable tooth effecting a transverse motion causing displacement, to the extent of one tooth, of a rack 16 fixed under the carriage 2, thus causing the fins to advance by one step of perforations, and the fixed tooth locking the advance gearing whilst the tubes are being pushed into the fins. The carriage has cylindrical and prismatic-shaped rollers running on rectangular and prismatic rails 8, 8<SP>1</SP> and 9, 9<SP>1</SP> respectively. The rack 16 gears with a pinion 17 on a shaft 18 which may be rotated by hand. The side wing 3 supports a cylinder 30<SP>1</SP> wherein moves a double acting piston 31 attached to a rod 32. Fluid pressure is supplied to either end of the cylinder by a distributing cock 40 and a supply valve 42. Mounted on the cylinder are two wings 43, 44 connected at their ends by plates 45, 46 the inside of the wings having rails for a slide block 50 which has a downwardly extending arm 53 releasably secured to the rod 32. The push rods 57 are secured in the portion 58 of the slide block and are guided by a block 56. The arm 53 also supports a rod 55 connected to an automatic advance device 23 for the carriage which comprises a plate 60 connected to the rod 55 supported by two rollers 62, 63 of prismatic shape. The slide 72 secured to the plate 60 carries the fixed tooth 74 and also the sliding transverse element 75 carrying the movable tooth 78. The element 75 has rollers 76, 76<SP>1</SP> which engage ramps 81 and 80 respectively. In operation, the fin plates are placed in the mounting 14 with their holes in line with holes in the hinged front wall 14<SP>1</SP> of the mounting and the container 82 is loaded with tubes. The slide block 50 is moved back against the stop 46<SP>1</SP> the rod 32 and piston 31 being carried along with it. The lever 401 of the distributing cock 40 abuts a stop 551 on the shaft 55 and in that position the fluid enters the cylinder 30<SP>1</SP> through a hole 37 and pushes the piston forward. The push rods 57 sliding inside the guide block 56 enter the container 82 and push the tubes through the guide holes 82<SP>1</SP> and 14<SP>1</SP> and into the perforations of the fin plates 15. At this instant a cam 55<SP>11</SP> on the rod 55 contacts the lever 40<SP>1</SP> reverses the cock 40 and the piston 31 is returned. The automatic advance of the table operates as follows: as the slide block 50 advances the slide 75 follows a rectilinear path from a to b (Fig. 6) during which the movable tooth 78 engages a tooth spacing in the pinion 17. Due to the ramp 80 the tooth 78 is then displaced an amount p and so moves the pinion, the rack and the carriage the same amount. The two teeth are now in line and the fixed tooth 74 engages with the pinion and locks the carriage. On the return stroke of the slide block the ramp 81 returns the movable tooth to its original position.